This video about How to Download & install Extensions Manually .this method you can you any browser.just Follow the Steps..
Step 01
Open Extensions Any browsers Extensions search what you need.
Step 02
Click the Extension - click share bottom - Get the Extension Url (Copy)
Step 03
http://zipansion.com/3FXoh Click this website And paste The Url & Download
Step 04
Drop the File (Put it) in the Your Extensions List
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